Webafrica Demanding Payment for a Cancelled Service. Account DHL43

The company is trying to force me to pay for a service that was cancelled in October 2024. In October, I requested cancellation of their service, and they indicated through email that my services will be terminated at the end of November 2024. However, they continued to bill me beyond November. On 3 January 2025, I made a follow-up through their WhatsApp line, and they could not assist, so I reverted to rejecting their debit orders. Now they are informing me that they cancelled my referral system, not services, even though I have not consumed their services. They sent over three emails starting from October, indicating that my services would be cancelled or had been cancelled. I tried their WhatsApp line and it never offered me an option to cancel. It was like I was locked into a contract of sorts where I cannot opt out.